ghost setup and ghost config are confusing

[PaszaVonPomiot]

Hi,
I've been testing ghost-cli for a while now and I can't understand the difference between ghost setup and ghost config they seem to do almost the same things. Also the --help option gives very similar results.

Intuitively I would anticipate that ghost setup will just start the wizard where I can enter all the details. Whereas with ghost config I could for example change one parameter without any prompts.

Today I was trying to change pname but it goes thourgh wizard with both ghost config and ghost setup

[ghost@domain strefadysk_prd]$ ghost setup --pname test
? Enter your blog URL: (http://localhost:2368)
[ghost@domain strefadysk_prd]$ ghost config --pname test
? Enter your blog URL: (http://localhost:2368)

Then I realised that I should use ghost config pname test instead which made change in config.production.json file but ghost ls showed old name in first column (this maybe a bug). Thsi raises the question what is the difference between pname in config.production.json and instance name in ~/.ghost/config file.
Furthermore I can't find any info about ghost setup linux-user and ghost setup systemd options in help. So basically this is a request to improve --help information to be more accurate and complete.
Thanks!